12kV Indoor High Voltage Isolating Switch

Dongfa Intelligent manufactures the 12kV Indoor High Voltage Isolating Switch in the GN19-12 series, covering 400A, 630A, 1000A, and 1250A ratings. Designed for indoor 12kV switchgear, the series combines multiple structural configurations with 210mm, 230mm, 250mm, and 275mm phase spacing options, allowing the disconnecter to be selected according to the cabinet layout and installation requirements. It is suitable for new switchgear, equipment replacement, and retrofit applications where dimensional compatibility needs to be considered.

Phase Spacing and Installation Dimensions

For this type of indoor disconnecter, the electrical rating is only one part of the selection process. The physical dimensions also need to correspond with the switchgear layout. The GN19-12 series provides several phase spacing options and structural configurations for different installation arrangements.

Multiple Phase Spacing Options

The available phase spacing options include 210mm, 230mm, 250mm, and 275mm. The required spacing should be confirmed according to the busbar arrangement and internal insulation distance of the switchgear.

Different Mounting Dimensions

The GN19-12, GN19-12C, GN19-12G, and GN19-12CG configurations have different A, B, and C dimensions and mounting hole arrangements. These dimensions should be checked against the cabinet drawing before selecting the final configuration.

GN19-12 Electrical Ratings

GN19-12 Structural Dimensions

How to Match the Switchgear

The correct configuration should be determined by checking the electrical requirements together with the existing or planned cabinet structure.

1. Confirm the required rated current: 400A, 630A, 1000A, or 1250A.
2. Confirm the required phase spacing: 210mm, 230mm, 250mm, or 275mm.
3. Check the available A, B, and C installation dimensions.
4. Compare the mounting hole size and position with the cabinet structure.
5. Confirm the applicable GN19-12 structural configuration.

Application in New and Existing Switchgear

The 12kV Indoor High Voltage Isolating Switch can be used in indoor 12kV distribution switchgear for new cabinet projects, industrial and mining power distribution, feeder sections, incoming sections, and other applications requiring a visible isolation point.

For new switchgear, the required phase spacing and installation dimensions can be considered during cabinet design. For existing equipment, the original switch model and actual cabinet dimensions should be checked before replacement.

Replacement and Retrofit Requirements

For retrofit projects, the same rated current does not necessarily mean that two disconnectors can be installed interchangeably. The phase spacing, mounting holes, A/B/C dimensions, and structural configuration should all be compared.

If the original drawing is available, it can be provided for technical review. When drawings are unavailable, clear photos together with measured dimensions can also be used as reference.

Technical Coordination for Switchgear Integration

For projects involving the 12kV Indoor High Voltage Isolating Switch, Dongfa Intelligent works with product drawings, cabinet layouts, electrical requirements, and measured dimensions to determine the suitable configuration. This approach is particularly useful when the available installation space or phase spacing differs between switchgear designs.

For standard requirements, the GN19-12 series can be selected from the documented configurations and dimensions. For replacement or non-standard projects, technical information can be reviewed before production so that the required phase spacing, mounting arrangement, and installation dimensions are confirmed in advance.

Support for Replacement Projects

When an existing disconnecter needs to be replaced, the original model and installation dimensions can be used as the basis for configuration review. If original drawings are unavailable, photos and measured data can be provided to help identify the applicable product arrangement.

Support for Customized Requirements

Phase spacing and installation dimensions can be discussed according to the actual switchgear structure. Dongfa Intelligent can evaluate special requirements based on customer drawings and confirmed technical specifications before production.

FAQ

What rated current options are available for the GN19-12 series?

The series covers 400A, 630A, 1000A, and 1250A configurations.

What phase spacing options are available?

The documented phase spacing options are 210mm, 230mm, 250mm, and 275mm.

Can the GN19-12 be used for replacement projects?

Yes. The original model, rated current, phase spacing, mounting dimensions, and cabinet structure should be checked before selecting a replacement configuration.

What if the original product drawing is unavailable?

Clear photos and measured A, B, and C dimensions, phase spacing, and mounting hole information can be provided for preliminary technical review.

Are different structural configurations available?

Yes. The documented configurations include GN19-12, GN19-12C, GN19-12G, and GN19-12CG. Their dimensions differ, so the applicable configuration should be confirmed according to the installation requirements.

Can phase spacing be customized?

Non-standard phase spacing can be reviewed according to the required cabinet arrangement and technical drawings. The final configuration should be confirmed before production.

Request Technical Confirmation

Please provide the required rated current, phase spacing, cabinet drawing or installation dimensions, and quantity when requesting the 12kV Indoor High Voltage Isolating Switch. For replacement projects, the original model or clear product photos can also be provided for configuration review.